A complete guide to Prague weather in August + local tips & what to wear
August is a fantastic time to come and visit Prague, since it’s very warm, plenty of sunshine and you have some of the longest daylight hours of the whole year.
You can still pack light and spend long days exploring the historic town centre, sit in the shade of park trees to have a picnic or enjoy a balmy evening at an outdoor concert. There are so many great things to do in August in Prague, including outdoor cinema screenings, amazing food festivals or late-night walks along the river, you’ll never be bored!
After living back in Prague for the last eight years or so, I’ve found that August often feels like the most settled part of summer. However, because those tall townhouses have been soaking up the sun all through June and July, the city centre can feel like a giant storage heater! It’s also the time of year when the air can get quite still and a bit dusty, especially if we haven’t had a good storm for a few days.
This is why when it’s very hot during the weekends and summer break, most Prague people escape to their country cottages (chata) or at least leave the town for a day trip to a river, lake or a mountains, where it’s a little cooler.
What is the weather like in August?
In my experience, most days in August can be really hot, easily up to 20-25 Celsius in the shade, but will feel much hotter in the sun.
The summer weather in Prague will get slightly cooler in August than in July, especially as you go towards the end of August. It’s also a little cooler at nigt and early in the morning, so I always have an extra layer on when I’m catching an early train to get out of Prague for a day trip.
When the weather is hot for a while, we usually get thunderstorms and rain. Whilst it does cool down a little for the nights, but don’t be surprised if it’s still very warm until very late at night.
My local tips on how to cope with hot August weather
When the sun is shining it can be very hot in the direct sun (easily up to 35 Celsius), so try to stay in the shade if you can. If you, like me, get easily sunburned, I’d recommend to plan your day, so that you stay indoors or in the shade between 1-3 pm.
This is the time when the sun is at its hottest, so I usually plan a visit to a museum, my favourite art galleries or having a picnic in the shade of trees in one of the many Prague’s parks and gardens.
If you don’t like the heat, I’d recommend that you check if your hotel has air conditioning, as it’s still not the norm in Prague. If you are choosing your accommodation for August, choose a hotel in an old 1900s townhouse. These have very high ceilings and thick walls, so even without air conditioning, these are much colder at night than modern houses or hotels.
For me, the the warm summer evenings are also the perfect opportunity for a stroll around the historic city centre whilst checking the latest flavours from my favourite Prague’s ice cream places at the same time.
We also often get a final summer heatwave in August, which can make sightseeing a little challenging. My favourite way to spend a hot August afternoon is at one of the many outdoor swimming spots, like the Divoká Šárka lido, which is nestled in a rocky valley and stays wonderfully refreshing.
A fab way to stay cool is also to take a pedal boat out on the Vltava river in the evening (you can hire them from the Slavic Island oposite the National Theatre in the centre of Prague). It’s one of my favourite things to do; the breeze off the water is just what you need after a day of walking on hot cobbles!
I’ve also had a great fun going on a half a day boat trip from Prague centre to Slapy (water dam with beautiful countryside around) and to Prague ZOO in Troja, where you can also visit the Troja Chateau and the Prague Botanical Garden (that one is on a steep hill withouth much shade, so be careful when visiting in the middle of the day).
Weather temperatures in August
- Average High Temperature: 23°C to 25°C (73°F to 77°F)
- Average Low Temperature: 12°C to 14°C (54°F to 57°F)
- Overall Average Temperature: Around 18.5°C (65°F)
Expect the temperatures to be at their lowest just before dawn and then progressively rising to the highest temperatures between 12-4 pm. In August, the evenings stay warm for a long time, which is perfect for enjoying the beer gardens or riverside bars at Smichovska Náplavka well after sunset.
How to read the local weather forecast
The local weather forecast uses Celsius (not Fahrenheit) and the temperature given is measured in the shade. This means that if the weather forecast mentions 22°C, it can easily be 30°C or more in the sun.
This is quite a big difference, so if you see anything over 20-22°C in a weather forecast, do plan some activities that will keep you in the shade during the afternoon.
How does the weather change during August in Prague?
August starts off very much like July weather – hot and sunny. However, as the month progresses, you might notice the mornings getting a little crisper and the evenings drawing in slightly. By the last week of August, you can sometimes feel the very first hint of autumn in the air, though it usually stays very pleasantly warm during the day.
Over the years, I’ve also noticed, that when we do get a summer heatwave in August or it’s still super hot, the temperatures do drop a lot lower at night than in July or late June. This helps to cool down the ground, so in the morning it takes a bit longer for the heat to start getting unbearable again. This means that if you get up early enough, you can get a lot of sightseeing done before the heat of the day.
The average rainfall in August
Prague has an average rainfall of about 60 mm to 75 mm (2.4 to 3 inches) for the month. Rain typically falls over approximately 9 to 11 days in August.
The rain usually comes in short, sharp bursts. If it’s a storm, it’ll be heavy but over quickly. If it’s a cooler front coming through, it might drizzle for a whole afternoon. Either way, it’s the perfect excuse to duck into a traditional café for a větrník (cream puff pastry) and a coffee!
How to predict the rain & the type of rain we usually get
Watch the sky over the Petřín Hill; if the clouds start looking heavy and purple-grey, a storm is likely on its way. August storms can be quite dramatic with plenty of lightning, but they often clear the humidity and leave the evening feeling fresh and wonderful.
The average sunshine days in August
Prague usually gets around 8 to 9 full sunny days in August. The rest are a mix of sun and clouds. Even on cloudy days, the UV index can be high, so don’t forget your suncream!
Daylight in August
I really like that at the beginning of August the sunrise is at 5.30 am and the sunset is at 8.45 pm. There is also about extra 30-40 minutes after the sunset when it’s still good visibility and enough time to finish a long day’s hike!
But, the daylight changes quickly as we go into the the middle of August, when the sunrise is at 5.50 am and the sunset alread at 8.20 pm.
And by the end of the August, the sunrise is nearly 45 minutes late at 6.15 am and the sunset at much earlier at 7.50 pm.
Regardles, this gives you between 13, 5 – 15 hrs of a day light in August, which is plenty to plan a long day exploring Prague or even for a day trip from Prague.
I always plan my longest day trips for summer as I can fit a lot into one day. I find that August is perfect for visiting castles like Křivoklát or Karlštejn, as the surrounding forests provide plenty of shade for the uphill walks!
I usually visit a historic town, chateau or museum in the morning and after lunch I head for my walk. The weather is a little cooler after 4 pm and by 6 pm it settles into a lovely summer evening. I can easily fit a whole day hike into the afternoon, often catching the first train after the sunset at 8-9 pm back to Prague.
Most people would set out for their day hike in the morning, which means that they are finishing when I’m starting mine. In the summer, the afternoon is the perfect time for walking because it’s not as hot and there are not a lot of people on the trails.
| Date | Sunrise | Sunset | Daylight Duration |
| August 1 | 05:27 | 20:42 | 15h 15m |
| August 10 | 05:40 | 20:27 | 14h 47m |
| August 20 | 05:55 | 20:08 | 14h 13m |
| August 31 | 06:12 | 19:44 | 13h 32m |
What does Prague’s nature look like in August?
In August everything is green and flowering. The parks are still lovely, but you might notice the grass looking a bit golden (or brown if it’s been a dry year!).
Most parks and gardens summer flower beds are looking at their peak. Roses always seem to have a long season here, my favourite is the Rose Garden at Petrin Hill where you can find the most rose varieties in the Prague.
Summer hay fever allergies
The good news is that in August, the grass pollen starts to drop off, but it is the peak season for weeds, especially mugwort and the dreaded ragweed.
If your regular tablets from home aren’t working, I really do recommend popping into a local lékárna, pharmacy, here in Prague. Just ask for something for ‘senná rýma’. The hay fever tables are fairly innexpensive here and I’ve found that the local versions really do tackle the specific Czech pollen cocktail much better than the ones I used to bring over from London!
What to pack for your visit to Prague in August
The good thing is that you don’t need a lot for your August visit to Prague!
Light summer clothes (dress, shorts, loose linen shirts) with one extra layer in case it’s a bit cold in the morning or evening should be sufficient. You might like to pack a light rainproof jacket or an umbrella in case it rains.
You also want to make sure you have a sun hat, sunglasses and sun cream. I’m not very good with sun, so I tend to wear long dress with light shirt (with long sleeves) when it’s very sunny as an extra barrier against the sun.
I also prefer to bring just a few outfits and then hand wash them, rather than to bring a big suitcase of clothes, but that depends on how you normally dress. I try to go for clothes that don’t need ironing and which can be drip-dried on a hanger overnight.
Footwear: Although it’s usually hot in August, I still prefer to wear comfortable trainers (or other suitable summer shoes) because Prague cobbled streets and pavements are very hard to walk on all day.
Layers: A very light jumper or a pashmina is handy for the end of the month or for sitting in a draughty cellar restaurant.
Sun Protection: A hat and sunglasses are non-negotiable.
Umbrella: I always carry with me a small umbrella. It’s great for the sudden August downpours, but also works a treat as a parasol when you’re stuck in a queue for an attraction in the full sun!
READ MORE:
August Historic weather data
- Warmest August: 2015 was incredibly hot, with an average temperature of 22.8°C and many days breaking the 35°C mark.
- Hottest Day: The record at the Klementinum station was set on August 20, 2012, reaching a blistering 39.6°C (103.3°F)!
- Coldest August: August 1978 was unusually chilly and damp, feeling more like October than the height of summer.
- The Great Flood: Sadly, August is also remembered for the devastating floods of 2002, which showed just how much rain summer storms can bring into the Vltava river in a short time.
This blog post was originally written on 15 May 2026 and last updated on 15 May 2026
